public class slove {
    int a;
    int b;
    int c;
    double x1;
    double x2;
    void input(int a, int b, int c){
        this.a=a;
        this.b=b;
        this.c=c;
    }
    boolean jie()
    {
        if(a==0){
            System.out.println("这不是一个元二次方程");
            return false;
        }else{
            if(b*b-4*a*c<0){
                System.out.println("此方程无解");
            }
            x1=(-b+Math.sqrt(b*b-4*a*c)/(2*a*c));
            x2=(-b-Math.sqrt(b*b-4*a*c)/(2*a*c));
        }
        return true;
    }
    void print(){
        System.out.println("x1="+x1);
        System.out.println("x2="+x2);
    }
}
